./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bb6780cd72c063a3ddf598e6503fa6a629155476e6b8e08224a0e59d0bc00b9 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:05:03,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:05:03,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:05:03,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:05:03,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:05:03,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:05:03,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:05:03,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:05:03,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:05:03,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:05:03,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:05:03,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:05:03,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:05:03,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:05:03,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:05:03,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:05:03,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:05:03,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:05:03,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:05:03,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:05:03,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:05:03,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:05:03,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:05:03,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:05:03,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:05:03,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:05:03,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:05:03,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:05:03,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:05:03,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:05:03,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:05:03,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:05:03,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:05:03,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:05:03,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:05:03,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:05:03,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:05:03,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:05:03,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:05:03,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:05:03,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:05:03,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:05:03,583 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:05:03,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:05:03,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:05:03,583 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:05:03,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:05:03,584 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:05:03,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:05:03,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:05:03,584 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:05:03,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:05:03,585 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:05:03,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:05:03,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:05:03,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:05:03,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:05:03,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:05:03,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:05:03,586 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:05:03,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:05:03,586 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:05:03,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:05:03,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:05:03,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:05:03,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:05:03,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:05:03,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:05:03,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:05:03,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:05:03,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:05:03,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:05:03,587 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:05:03,588 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:05:03,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:05:03,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:05:03,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bb6780cd72c063a3ddf598e6503fa6a629155476e6b8e08224a0e59d0bc00b9 [2021-12-06 23:05:03,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:05:03,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:05:03,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:05:03,793 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:05:03,794 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:05:03,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c [2021-12-06 23:05:03,836 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/data/8bc6a6c10/1bc42eb0f69f43cb80f1aa89d1f6bf36/FLAG29c4dfd70 [2021-12-06 23:05:04,202 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:05:04,203 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c [2021-12-06 23:05:04,208 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/data/8bc6a6c10/1bc42eb0f69f43cb80f1aa89d1f6bf36/FLAG29c4dfd70 [2021-12-06 23:05:04,217 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/data/8bc6a6c10/1bc42eb0f69f43cb80f1aa89d1f6bf36 [2021-12-06 23:05:04,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:05:04,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:05:04,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:05:04,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:05:04,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:05:04,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:05:04" (1/1) ... [2021-12-06 23:05:04,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772a3feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:04, skipping insertion in model container [2021-12-06 23:05:04,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:05:04" (1/1) ... [2021-12-06 23:05:04,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:05:04,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:05:04,347 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2021-12-06 23:05:04,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:05:04,364 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:05:04,373 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2021-12-06 23:05:04,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:05:04,388 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:05:04,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:04 WrapperNode [2021-12-06 23:05:04,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:05:04,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:05:04,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:05:04,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:05:04,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:04" (1/1) ... [2021-12-06 23:05:04,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:04" (1/1) ... [2021-12-06 23:05:04,412 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2021-12-06 23:05:04,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:05:04,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:05:04,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:05:04,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:05:04,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:04" (1/1) ... [2021-12-06 23:05:04,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:04" (1/1) ... [2021-12-06 23:05:04,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:04" (1/1) ... [2021-12-06 23:05:04,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:04" (1/1) ... [2021-12-06 23:05:04,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:04" (1/1) ... [2021-12-06 23:05:04,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:04" (1/1) ... [2021-12-06 23:05:04,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:04" (1/1) ... [2021-12-06 23:05:04,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:05:04,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:05:04,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:05:04,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:05:04,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:04" (1/1) ... [2021-12-06 23:05:04,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:05:04,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:04,458 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:05:04,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:05:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:05:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 23:05:04,507 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 23:05:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:05:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:05:04,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:05:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 23:05:04,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 23:05:04,549 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:05:04,550 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:05:04,627 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:05:04,632 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:05:04,632 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 23:05:04,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:05:04 BoogieIcfgContainer [2021-12-06 23:05:04,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:05:04,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:05:04,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:05:04,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:05:04,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:05:04" (1/3) ... [2021-12-06 23:05:04,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efc81e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:05:04, skipping insertion in model container [2021-12-06 23:05:04,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:05:04" (2/3) ... [2021-12-06 23:05:04,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efc81e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:05:04, skipping insertion in model container [2021-12-06 23:05:04,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:05:04" (3/3) ... [2021-12-06 23:05:04,639 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound1.c [2021-12-06 23:05:04,642 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:05:04,643 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:05:04,680 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:05:04,685 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:05:04,686 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:05:04,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 23:05:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 23:05:04,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:04,706 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:04,706 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:04,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:04,712 INFO L85 PathProgramCache]: Analyzing trace with hash -487550744, now seen corresponding path program 1 times [2021-12-06 23:05:04,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:04,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624622345] [2021-12-06 23:05:04,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:04,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:04,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:05:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:04,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:05:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:04,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 23:05:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:05:04,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:04,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624622345] [2021-12-06 23:05:04,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624622345] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:04,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:04,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:05:04,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347452239] [2021-12-06 23:05:04,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:04,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 23:05:04,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:04,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 23:05:04,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:05:04,884 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 23:05:04,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:04,900 INFO L93 Difference]: Finished difference Result 63 states and 104 transitions. [2021-12-06 23:05:04,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 23:05:04,902 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-12-06 23:05:04,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:04,908 INFO L225 Difference]: With dead ends: 63 [2021-12-06 23:05:04,908 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 23:05:04,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:05:04,913 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:04,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:04,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 23:05:04,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-06 23:05:04,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 23:05:04,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2021-12-06 23:05:04,942 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2021-12-06 23:05:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:04,942 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2021-12-06 23:05:04,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 23:05:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2021-12-06 23:05:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 23:05:04,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:04,944 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:04,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:05:04,944 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:04,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1636258074, now seen corresponding path program 1 times [2021-12-06 23:05:04,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:04,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697593151] [2021-12-06 23:05:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:04,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:05,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:05:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:05:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 23:05:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:05:05,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:05,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697593151] [2021-12-06 23:05:05,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697593151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:05,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:05,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:05:05,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994488189] [2021-12-06 23:05:05,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:05,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:05:05,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:05,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:05:05,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:05:05,035 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 23:05:05,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:05,074 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2021-12-06 23:05:05,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:05:05,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2021-12-06 23:05:05,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:05,076 INFO L225 Difference]: With dead ends: 42 [2021-12-06 23:05:05,076 INFO L226 Difference]: Without dead ends: 40 [2021-12-06 23:05:05,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:05:05,077 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:05,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 134 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:05,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-06 23:05:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2021-12-06 23:05:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 23:05:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2021-12-06 23:05:05,087 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 24 [2021-12-06 23:05:05,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:05,087 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2021-12-06 23:05:05,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 23:05:05,088 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2021-12-06 23:05:05,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 23:05:05,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:05,089 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:05,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:05:05,089 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:05,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:05,090 INFO L85 PathProgramCache]: Analyzing trace with hash 906849917, now seen corresponding path program 1 times [2021-12-06 23:05:05,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:05,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977231174] [2021-12-06 23:05:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:05,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:05,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:05:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:05,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 23:05:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:05,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 23:05:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:05:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:05,170 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 23:05:05,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:05,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977231174] [2021-12-06 23:05:05,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977231174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:05,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:05,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:05:05,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142834013] [2021-12-06 23:05:05,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:05,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:05:05,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:05,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:05:05,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:05:05,173 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 23:05:05,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:05,217 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2021-12-06 23:05:05,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:05:05,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-12-06 23:05:05,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:05,219 INFO L225 Difference]: With dead ends: 46 [2021-12-06 23:05:05,219 INFO L226 Difference]: Without dead ends: 44 [2021-12-06 23:05:05,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:05:05,221 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:05,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 130 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:05,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-06 23:05:05,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2021-12-06 23:05:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 23:05:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2021-12-06 23:05:05,232 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2021-12-06 23:05:05,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:05,233 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2021-12-06 23:05:05,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 23:05:05,237 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2021-12-06 23:05:05,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 23:05:05,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:05,238 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:05,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:05:05,239 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:05,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:05,239 INFO L85 PathProgramCache]: Analyzing trace with hash 710995206, now seen corresponding path program 1 times [2021-12-06 23:05:05,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:05,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510665355] [2021-12-06 23:05:05,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:05,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:05,252 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:05:05,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659885042] [2021-12-06 23:05:05,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:05,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:05,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:05,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:05,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:05:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:05,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 23:05:05,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 23:05:05,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:05:05,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:05,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510665355] [2021-12-06 23:05:05,535 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:05:05,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659885042] [2021-12-06 23:05:05,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659885042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:05,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:05,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 23:05:05,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163904863] [2021-12-06 23:05:05,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:05,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:05:05,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:05,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:05:05,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:05:05,538 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 23:05:05,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:05,639 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2021-12-06 23:05:05,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:05:05,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 34 [2021-12-06 23:05:05,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:05,640 INFO L225 Difference]: With dead ends: 65 [2021-12-06 23:05:05,641 INFO L226 Difference]: Without dead ends: 51 [2021-12-06 23:05:05,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:05:05,642 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 20 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:05,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 216 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:05:05,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-06 23:05:05,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-12-06 23:05:05,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-06 23:05:05,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2021-12-06 23:05:05,651 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 34 [2021-12-06 23:05:05,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:05,651 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2021-12-06 23:05:05,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 23:05:05,651 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2021-12-06 23:05:05,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 23:05:05,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:05,652 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:05,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:05:05,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:05,855 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:05,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:05,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1829555286, now seen corresponding path program 1 times [2021-12-06 23:05:05,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:05,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919981205] [2021-12-06 23:05:05,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:05,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:05,894 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:05:05,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541407087] [2021-12-06 23:05:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:05,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:05,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:05,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:05,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:05:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:06,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 23:05:06,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:05:06,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 23:05:06,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:06,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919981205] [2021-12-06 23:05:06,346 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:05:06,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541407087] [2021-12-06 23:05:06,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541407087] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:06,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:05:06,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2021-12-06 23:05:06,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942881672] [2021-12-06 23:05:06,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:06,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:05:06,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:06,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:05:06,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:05:06,348 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 23:05:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:06,394 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2021-12-06 23:05:06,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:05:06,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2021-12-06 23:05:06,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:06,396 INFO L225 Difference]: With dead ends: 64 [2021-12-06 23:05:06,396 INFO L226 Difference]: Without dead ends: 62 [2021-12-06 23:05:06,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:05:06,397 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:06,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 158 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:06,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-06 23:05:06,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2021-12-06 23:05:06,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 35 states have (on average 1.2) internal successors, (42), 37 states have internal predecessors, (42), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 23:05:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2021-12-06 23:05:06,406 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 41 [2021-12-06 23:05:06,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:06,407 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2021-12-06 23:05:06,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 23:05:06,407 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2021-12-06 23:05:06,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 23:05:06,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:06,408 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:06,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 23:05:06,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:06,610 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:06,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:06,612 INFO L85 PathProgramCache]: Analyzing trace with hash 105343995, now seen corresponding path program 1 times [2021-12-06 23:05:06,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:06,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661707210] [2021-12-06 23:05:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:06,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:06,657 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:05:06,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433905117] [2021-12-06 23:05:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:06,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:06,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:06,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:06,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:05:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:06,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 23:05:06,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-06 23:05:07,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-06 23:05:07,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:07,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661707210] [2021-12-06 23:05:07,112 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:05:07,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433905117] [2021-12-06 23:05:07,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433905117] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:05:07,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:05:07,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2021-12-06 23:05:07,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639392543] [2021-12-06 23:05:07,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:07,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:05:07,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:07,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:05:07,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:05:07,114 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 23:05:07,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:07,345 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2021-12-06 23:05:07,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:05:07,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2021-12-06 23:05:07,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:07,347 INFO L225 Difference]: With dead ends: 72 [2021-12-06 23:05:07,347 INFO L226 Difference]: Without dead ends: 70 [2021-12-06 23:05:07,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:05:07,349 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:07,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 125 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:05:07,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-06 23:05:07,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2021-12-06 23:05:07,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 42 states have internal predecessors, (46), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-06 23:05:07,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 84 transitions. [2021-12-06 23:05:07,363 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 84 transitions. Word has length 51 [2021-12-06 23:05:07,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:07,363 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 84 transitions. [2021-12-06 23:05:07,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 23:05:07,363 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 84 transitions. [2021-12-06 23:05:07,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 23:05:07,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:07,365 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:07,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 23:05:07,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 23:05:07,566 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:07,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:07,566 INFO L85 PathProgramCache]: Analyzing trace with hash 957489548, now seen corresponding path program 1 times [2021-12-06 23:05:07,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:07,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650698820] [2021-12-06 23:05:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:07,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:07,574 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:05:07,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440602086] [2021-12-06 23:05:07,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:07,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:07,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:07,575 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:07,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 23:05:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:07,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:05:07,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-06 23:05:07,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:05:07,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:05:07,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650698820] [2021-12-06 23:05:07,705 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:05:07,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440602086] [2021-12-06 23:05:07,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440602086] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:05:07,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:05:07,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:05:07,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819605040] [2021-12-06 23:05:07,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:05:07,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:05:07,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:05:07,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:05:07,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:05:07,708 INFO L87 Difference]: Start difference. First operand 67 states and 84 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 23:05:07,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:05:07,755 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2021-12-06 23:05:07,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:05:07,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2021-12-06 23:05:07,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:05:07,757 INFO L225 Difference]: With dead ends: 75 [2021-12-06 23:05:07,757 INFO L226 Difference]: Without dead ends: 68 [2021-12-06 23:05:07,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:05:07,758 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:05:07,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 116 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:05:07,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-06 23:05:07,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2021-12-06 23:05:07,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 40 states have (on average 1.15) internal successors, (46), 43 states have internal predecessors, (46), 18 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-06 23:05:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2021-12-06 23:05:07,768 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 52 [2021-12-06 23:05:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:05:07,768 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2021-12-06 23:05:07,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 23:05:07,768 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2021-12-06 23:05:07,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-06 23:05:07,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:05:07,769 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:05:07,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 23:05:07,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 23:05:07,971 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:05:07,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:05:07,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1754894755, now seen corresponding path program 1 times [2021-12-06 23:05:07,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:05:07,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638623235] [2021-12-06 23:05:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:07,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:05:08,007 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:05:08,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747909086] [2021-12-06 23:05:08,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:05:08,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:05:08,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:05:08,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:05:08,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 23:05:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:05:08,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-06 23:05:08,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:05:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 38 proven. 27 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-06 23:05:08,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:05:44,347 WARN L227 SmtUtils]: Spent 23.27s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 23:07:01,503 WARN L227 SmtUtils]: Spent 26.47s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 23:08:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 36 proven. 8 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-06 23:08:03,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:03,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638623235] [2021-12-06 23:08:03,850 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:08:03,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747909086] [2021-12-06 23:08:03,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747909086] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:03,850 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:08:03,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 21 [2021-12-06 23:08:03,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411601377] [2021-12-06 23:08:03,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:03,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 23:08:03,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:03,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 23:08:03,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-12-06 23:08:03,852 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 10 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-06 23:08:24,136 WARN L227 SmtUtils]: Spent 18.35s on a formula simplification. DAG size of input: 52 DAG size of output: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 23:08:30,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:30,493 INFO L93 Difference]: Finished difference Result 141 states and 186 transitions. [2021-12-06 23:08:30,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 23:08:30,493 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 10 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) Word has length 71 [2021-12-06 23:08:30,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:30,495 INFO L225 Difference]: With dead ends: 141 [2021-12-06 23:08:30,495 INFO L226 Difference]: Without dead ends: 114 [2021-12-06 23:08:30,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 73.1s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2021-12-06 23:08:30,496 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 79 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:30,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 254 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-12-06 23:08:30,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-06 23:08:30,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2021-12-06 23:08:30,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 65 states have (on average 1.2) internal successors, (78), 70 states have internal predecessors, (78), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (31), 27 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-06 23:08:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 141 transitions. [2021-12-06 23:08:30,509 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 141 transitions. Word has length 71 [2021-12-06 23:08:30,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:30,509 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 141 transitions. [2021-12-06 23:08:30,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 19 states have internal predecessors, (39), 10 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 9 states have call predecessors, (22), 8 states have call successors, (22) [2021-12-06 23:08:30,509 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 141 transitions. [2021-12-06 23:08:30,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-06 23:08:30,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:30,511 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:30,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 23:08:30,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:30,712 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:30,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1620227847, now seen corresponding path program 1 times [2021-12-06 23:08:30,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:30,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633223214] [2021-12-06 23:08:30,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:30,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:30,744 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:08:30,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076490820] [2021-12-06 23:08:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:30,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:30,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:30,746 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:30,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 23:08:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:30,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 23:08:30,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-06 23:08:31,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-12-06 23:08:33,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:33,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633223214] [2021-12-06 23:08:33,516 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:08:33,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076490820] [2021-12-06 23:08:33,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076490820] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:33,516 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:08:33,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 18 [2021-12-06 23:08:33,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641612204] [2021-12-06 23:08:33,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:33,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 23:08:33,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:33,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 23:08:33,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-12-06 23:08:33,518 INFO L87 Difference]: Start difference. First operand 109 states and 141 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 12 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2021-12-06 23:08:37,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:37,988 INFO L93 Difference]: Finished difference Result 193 states and 266 transitions. [2021-12-06 23:08:37,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 23:08:37,989 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 12 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 82 [2021-12-06 23:08:37,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:37,991 INFO L225 Difference]: With dead ends: 193 [2021-12-06 23:08:37,991 INFO L226 Difference]: Without dead ends: 157 [2021-12-06 23:08:37,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2021-12-06 23:08:37,992 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 50 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:37,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 363 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 23:08:37,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-06 23:08:38,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 135. [2021-12-06 23:08:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 80 states have (on average 1.2625) internal successors, (101), 85 states have internal predecessors, (101), 43 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (42), 38 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-06 23:08:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 186 transitions. [2021-12-06 23:08:38,008 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 186 transitions. Word has length 82 [2021-12-06 23:08:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:38,008 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 186 transitions. [2021-12-06 23:08:38,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 12 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2021-12-06 23:08:38,009 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 186 transitions. [2021-12-06 23:08:38,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-06 23:08:38,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:38,010 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:38,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 23:08:38,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:38,211 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:38,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:38,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1729716470, now seen corresponding path program 1 times [2021-12-06 23:08:38,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:38,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030831618] [2021-12-06 23:08:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:38,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:38,237 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:08:38,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866166273] [2021-12-06 23:08:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:38,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:38,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:38,241 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:38,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 23:08:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:38,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:08:38,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:38,428 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-12-06 23:08:38,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-12-06 23:08:38,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:38,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030831618] [2021-12-06 23:08:38,735 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:08:38,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866166273] [2021-12-06 23:08:38,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866166273] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:38,735 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:08:38,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-12-06 23:08:38,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675490910] [2021-12-06 23:08:38,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:38,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:08:38,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:38,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:08:38,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:08:38,736 INFO L87 Difference]: Start difference. First operand 135 states and 186 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 8 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2021-12-06 23:08:39,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:39,058 INFO L93 Difference]: Finished difference Result 143 states and 194 transitions. [2021-12-06 23:08:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:08:39,058 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 8 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) Word has length 87 [2021-12-06 23:08:39,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:39,059 INFO L225 Difference]: With dead ends: 143 [2021-12-06 23:08:39,060 INFO L226 Difference]: Without dead ends: 135 [2021-12-06 23:08:39,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:08:39,060 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 12 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:39,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 258 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 23:08:39,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-12-06 23:08:39,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-12-06 23:08:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 80 states have (on average 1.25) internal successors, (100), 85 states have internal predecessors, (100), 43 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (42), 38 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-06 23:08:39,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 185 transitions. [2021-12-06 23:08:39,073 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 185 transitions. Word has length 87 [2021-12-06 23:08:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:39,074 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 185 transitions. [2021-12-06 23:08:39,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 8 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2021-12-06 23:08:39,074 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 185 transitions. [2021-12-06 23:08:39,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 23:08:39,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:39,075 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:39,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 23:08:39,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:39,277 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:39,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:39,278 INFO L85 PathProgramCache]: Analyzing trace with hash -219918921, now seen corresponding path program 1 times [2021-12-06 23:08:39,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:39,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031768955] [2021-12-06 23:08:39,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:39,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:39,299 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:08:39,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432664262] [2021-12-06 23:08:39,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:39,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:39,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:39,300 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:39,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 23:08:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:08:39,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:08:39,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:39,442 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-12-06 23:08:39,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:08:39,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:39,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031768955] [2021-12-06 23:08:39,442 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:08:39,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432664262] [2021-12-06 23:08:39,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432664262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:08:39,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:08:39,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 23:08:39,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977410282] [2021-12-06 23:08:39,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:08:39,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:08:39,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:39,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:08:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:08:39,444 INFO L87 Difference]: Start difference. First operand 135 states and 185 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-06 23:08:39,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:39,509 INFO L93 Difference]: Finished difference Result 147 states and 196 transitions. [2021-12-06 23:08:39,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:08:39,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 91 [2021-12-06 23:08:39,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:39,511 INFO L225 Difference]: With dead ends: 147 [2021-12-06 23:08:39,511 INFO L226 Difference]: Without dead ends: 135 [2021-12-06 23:08:39,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:08:39,512 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 7 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:39,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 125 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:08:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-12-06 23:08:39,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-12-06 23:08:39,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 80 states have (on average 1.225) internal successors, (98), 85 states have internal predecessors, (98), 43 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (42), 38 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-06 23:08:39,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 183 transitions. [2021-12-06 23:08:39,524 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 183 transitions. Word has length 91 [2021-12-06 23:08:39,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:39,524 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 183 transitions. [2021-12-06 23:08:39,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-06 23:08:39,524 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 183 transitions. [2021-12-06 23:08:39,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 23:08:39,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:39,525 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:39,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 23:08:39,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:39,726 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:39,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:39,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1562474561, now seen corresponding path program 2 times [2021-12-06 23:08:39,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:39,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610559498] [2021-12-06 23:08:39,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:39,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:39,733 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:08:39,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39696160] [2021-12-06 23:08:39,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:08:39,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:39,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:39,734 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:39,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 23:08:39,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:08:39,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:08:39,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:08:39,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 109 proven. 9 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-06 23:08:39,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 33 proven. 9 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-06 23:08:39,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:08:39,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610559498] [2021-12-06 23:08:39,934 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:08:39,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39696160] [2021-12-06 23:08:39,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39696160] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:08:39,934 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:08:39,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-12-06 23:08:39,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228565334] [2021-12-06 23:08:39,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:08:39,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:08:39,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:08:39,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:08:39,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:08:39,935 INFO L87 Difference]: Start difference. First operand 135 states and 183 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 5 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 23:08:39,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:08:39,962 INFO L93 Difference]: Finished difference Result 159 states and 211 transitions. [2021-12-06 23:08:39,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:08:39,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 5 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 95 [2021-12-06 23:08:39,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:08:39,963 INFO L225 Difference]: With dead ends: 159 [2021-12-06 23:08:39,963 INFO L226 Difference]: Without dead ends: 99 [2021-12-06 23:08:39,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:08:39,964 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:08:39,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 128 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:08:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-06 23:08:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-12-06 23:08:39,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 64 states have internal predecessors, (68), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-06 23:08:39,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2021-12-06 23:08:39,973 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 95 [2021-12-06 23:08:39,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:08:39,973 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2021-12-06 23:08:39,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 5 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 23:08:39,973 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2021-12-06 23:08:39,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 23:08:39,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:08:39,974 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:08:40,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 23:08:40,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:40,176 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:08:40,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:08:40,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2103086134, now seen corresponding path program 2 times [2021-12-06 23:08:40,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:08:40,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694956838] [2021-12-06 23:08:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:08:40,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:08:40,204 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:08:40,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999379968] [2021-12-06 23:08:40,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:08:40,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:08:40,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:08:40,208 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:08:40,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 23:08:40,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:08:40,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:08:40,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 23:08:40,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:08:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 162 proven. 21 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-12-06 23:08:40,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:08:53,617 WARN L860 $PredicateComparison]: unable to prove that (<= 0 (div (let ((.cse0 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296))) (+ (div .cse0 4) (* (div (+ (- 1) (* .cse0 (- 1))) (- 2)) (- 1)) 1)) 4294967296)) is different from true [2021-12-06 23:09:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 26 proven. 21 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-12-06 23:09:00,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:09:00,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694956838] [2021-12-06 23:09:00,242 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:09:00,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999379968] [2021-12-06 23:09:00,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999379968] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:09:00,242 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:09:00,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-06 23:09:00,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687658504] [2021-12-06 23:09:00,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:09:00,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 23:09:00,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:09:00,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 23:09:00,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=104, Unknown=1, NotChecked=20, Total=156 [2021-12-06 23:09:00,243 INFO L87 Difference]: Start difference. First operand 99 states and 121 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 10 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (28), 9 states have call predecessors, (28), 10 states have call successors, (28) [2021-12-06 23:09:00,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:09:00,451 INFO L93 Difference]: Finished difference Result 103 states and 124 transitions. [2021-12-06 23:09:00,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:09:00,451 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 10 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (28), 9 states have call predecessors, (28), 10 states have call successors, (28) Word has length 101 [2021-12-06 23:09:00,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:09:00,452 INFO L225 Difference]: With dead ends: 103 [2021-12-06 23:09:00,452 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 23:09:00,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=60, Invalid=183, Unknown=1, NotChecked=28, Total=272 [2021-12-06 23:09:00,453 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:09:00,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 176 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 62 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2021-12-06 23:09:00,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 23:09:00,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 23:09:00,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:09:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 23:09:00,454 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2021-12-06 23:09:00,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:09:00,454 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 23:09:00,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 10 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (28), 9 states have call predecessors, (28), 10 states have call successors, (28) [2021-12-06 23:09:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 23:09:00,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 23:09:00,456 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 23:09:00,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-06 23:09:00,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 23:09:00,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 23:09:03,529 INFO L854 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (and (<= .cse0 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) (<= 1 .cse0))) [2021-12-06 23:09:03,530 INFO L858 garLoopResultBuilder]: For program point L48(lines 46 58) no Hoare annotation was computed. [2021-12-06 23:09:03,530 INFO L854 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse1)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (<= (div |ULTIMATE.start_main_~r~0#1| (- 4294967296)) (div (+ 1 (* |ULTIMATE.start_main_~r~0#1| (- 1))) 4294967296))) (.cse4 (= (+ (* 4294967296 (div |ULTIMATE.start_main_~A~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~p~0#1|) (= (* 2 .cse1) |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 (<= (div |ULTIMATE.start_main_~d~0#1| 2) |ULTIMATE.start_main_~r~0#1|)) (and (<= .cse1 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse1) .cse0 .cse2 .cse3 .cse4)))) [2021-12-06 23:09:03,530 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 23:09:03,530 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 23:09:03,530 INFO L858 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2021-12-06 23:09:03,530 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 23:09:03,530 INFO L854 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 1) [2021-12-06 23:09:03,530 INFO L854 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 1) (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 1)) [2021-12-06 23:09:03,530 INFO L854 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse1)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (<= (div |ULTIMATE.start_main_~r~0#1| (- 4294967296)) (div (+ 1 (* |ULTIMATE.start_main_~r~0#1| (- 1))) 4294967296))) (.cse4 (= (+ (* 4294967296 (div |ULTIMATE.start_main_~A~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~p~0#1|) (= (* 2 .cse1) |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 (<= (div |ULTIMATE.start_main_~d~0#1| 2) |ULTIMATE.start_main_~r~0#1|)) (and (<= .cse1 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse1) .cse0 .cse2 .cse3 .cse4)))) [2021-12-06 23:09:03,530 INFO L854 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse1)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (<= (div |ULTIMATE.start_main_~r~0#1| (- 4294967296)) (div (+ 1 (* |ULTIMATE.start_main_~r~0#1| (- 1))) 4294967296))) (.cse4 (= (+ (* 4294967296 (div |ULTIMATE.start_main_~A~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~p~0#1|) (= (* 2 .cse1) |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 (<= (div |ULTIMATE.start_main_~d~0#1| 2) |ULTIMATE.start_main_~r~0#1|)) (and (<= .cse1 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse1) .cse0 .cse2 .cse3 .cse4)))) [2021-12-06 23:09:03,530 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 23:09:03,531 INFO L861 garLoopResultBuilder]: At program point L62(lines 22 63) the Hoare annotation is: true [2021-12-06 23:09:03,531 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-12-06 23:09:03,531 INFO L858 garLoopResultBuilder]: For program point L54(lines 54 57) no Hoare annotation was computed. [2021-12-06 23:09:03,531 INFO L858 garLoopResultBuilder]: For program point L54-2(lines 22 63) no Hoare annotation was computed. [2021-12-06 23:09:03,531 INFO L854 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse5 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= .cse5 1)) (.cse1 (= |ULTIMATE.start_main_~d~0#1| .cse5)) (.cse2 (<= 1 .cse5)) (.cse3 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (or (let ((.cse4 (* .cse5 |ULTIMATE.start_main_~q~0#1|))) (and .cse0 .cse1 .cse2 (<= .cse3 1) (= .cse3 (+ |ULTIMATE.start_main_~r~0#1| .cse4)) (= (+ (* .cse5 |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~r~0#1| .cse4) (+ |ULTIMATE.start_main_~d~0#1| .cse3)))) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) .cse1 .cse2 (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| .cse3))))) [2021-12-06 23:09:03,531 INFO L854 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (<= 1 .cse1)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (<= (div |ULTIMATE.start_main_~r~0#1| (- 4294967296)) (div (+ 1 (* |ULTIMATE.start_main_~r~0#1| (- 1))) 4294967296))) (.cse4 (= (+ (* 4294967296 (div |ULTIMATE.start_main_~A~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~p~0#1|) (= (* 2 .cse1) |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 (<= (div |ULTIMATE.start_main_~d~0#1| 2) |ULTIMATE.start_main_~r~0#1|)) (and (<= .cse1 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse1) .cse0 .cse2 .cse3 .cse4)))) [2021-12-06 23:09:03,531 INFO L861 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2021-12-06 23:09:03,531 INFO L858 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-12-06 23:09:03,531 INFO L854 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse4 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse0 (<= .cse4 1)) (.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse4))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~p~0#1|) (= (* 2 .cse1) |ULTIMATE.start_main_~d~0#1|) .cse2 (< .cse1 |ULTIMATE.start_main_~d~0#1|) .cse3 (<= (div |ULTIMATE.start_main_~d~0#1| 2) |ULTIMATE.start_main_~r~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (= (+ (* .cse1 |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~r~0#1| (* .cse1 |ULTIMATE.start_main_~q~0#1|)) (+ |ULTIMATE.start_main_~d~0#1| .cse4)) (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse4) (< |ULTIMATE.start_main_~d~0#1| (+ .cse4 1)) (< (div (+ (- 1) (* .cse4 (- 1))) (- 2)) (+ |ULTIMATE.start_main_~d~0#1| 1))) (and (<= .cse1 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse1) (<= 1 .cse1) .cse2 .cse3)))) [2021-12-06 23:09:03,532 INFO L854 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse4 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse0 (<= .cse4 1)) (.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse4))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~p~0#1|) (= (* 2 .cse1) |ULTIMATE.start_main_~d~0#1|) .cse2 (< .cse1 |ULTIMATE.start_main_~d~0#1|) .cse3 (<= (div |ULTIMATE.start_main_~d~0#1| 2) |ULTIMATE.start_main_~r~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (= (+ (* .cse1 |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~r~0#1| (* .cse1 |ULTIMATE.start_main_~q~0#1|)) (+ |ULTIMATE.start_main_~d~0#1| .cse4)) (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse4) (< |ULTIMATE.start_main_~d~0#1| (+ .cse4 1)) (< (div (+ (- 1) (* .cse4 (- 1))) (- 2)) (+ |ULTIMATE.start_main_~d~0#1| 1))) (and (<= .cse1 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse1) (<= 1 .cse1) .cse2 .cse3)))) [2021-12-06 23:09:03,532 INFO L858 garLoopResultBuilder]: For program point L39(lines 36 44) no Hoare annotation was computed. [2021-12-06 23:09:03,532 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2021-12-06 23:09:03,532 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-12-06 23:09:03,532 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2021-12-06 23:09:03,532 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2021-12-06 23:09:03,532 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-12-06 23:09:03,532 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-12-06 23:09:03,532 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2021-12-06 23:09:03,532 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2021-12-06 23:09:03,532 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2021-12-06 23:09:03,532 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-12-06 23:09:03,535 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:09:03,535 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:09:03,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:09:03 BoogieIcfgContainer [2021-12-06 23:09:03,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:09:03,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:09:03,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:09:03,546 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:09:03,547 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:05:04" (3/4) ... [2021-12-06 23:09:03,549 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 23:09:03,553 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-06 23:09:03,553 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-06 23:09:03,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-06 23:09:03,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 23:09:03,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 23:09:03,556 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 23:09:03,579 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 23:09:03,580 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:09:03,580 INFO L158 Benchmark]: Toolchain (without parser) took 239359.87ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 67.1MB in the beginning and 29.6MB in the end (delta: 37.5MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2021-12-06 23:09:03,580 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 104.9MB. Free memory was 83.2MB in the beginning and 83.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:09:03,581 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.86ms. Allocated memory is still 104.9MB. Free memory was 66.9MB in the beginning and 56.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 23:09:03,581 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.82ms. Allocated memory is still 104.9MB. Free memory was 56.7MB in the beginning and 55.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:09:03,581 INFO L158 Benchmark]: Boogie Preprocessor took 15.33ms. Allocated memory is still 104.9MB. Free memory was 55.2MB in the beginning and 54.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:09:03,581 INFO L158 Benchmark]: RCFGBuilder took 204.15ms. Allocated memory is still 104.9MB. Free memory was 54.1MB in the beginning and 74.6MB in the end (delta: -20.5MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-12-06 23:09:03,582 INFO L158 Benchmark]: TraceAbstraction took 238911.78ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 74.1MB in the beginning and 32.7MB in the end (delta: 41.3MB). Peak memory consumption was 71.1MB. Max. memory is 16.1GB. [2021-12-06 23:09:03,582 INFO L158 Benchmark]: Witness Printer took 33.34ms. Allocated memory is still 125.8MB. Free memory was 32.7MB in the beginning and 29.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:09:03,583 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 104.9MB. Free memory was 83.2MB in the beginning and 83.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 166.86ms. Allocated memory is still 104.9MB. Free memory was 66.9MB in the beginning and 56.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.82ms. Allocated memory is still 104.9MB. Free memory was 56.7MB in the beginning and 55.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.33ms. Allocated memory is still 104.9MB. Free memory was 55.2MB in the beginning and 54.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 204.15ms. Allocated memory is still 104.9MB. Free memory was 54.1MB in the beginning and 74.6MB in the end (delta: -20.5MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * TraceAbstraction took 238911.78ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 74.1MB in the beginning and 32.7MB in the end (delta: 41.3MB). Peak memory consumption was 71.1MB. Max. memory is 16.1GB. * Witness Printer took 33.34ms. Allocated memory is still 125.8MB. Free memory was 32.7MB in the beginning and 29.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 238.9s, OverallIterations: 13, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 32.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.9s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 266 SdHoareTripleChecker+Valid, 9.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 224 mSDsluCounter, 2226 SdHoareTripleChecker+Invalid, 8.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 36 IncrementalHoareTripleChecker+Unchecked, 1694 mSDsCounter, 323 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1294 IncrementalHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 323 mSolverCounterUnsat, 532 mSDtfsCounter, 1294 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1282 GetRequests, 1150 SyntacticMatches, 7 SemanticMatches, 125 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 78.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=9, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 47 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 99 PreInvPairs, 124 NumberOfFragments, 697 HoareAnnotationTreeSize, 99 FomulaSimplifications, 58 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 14 FomulaSimplificationsInter, 6143 FormulaSimplificationTreeSizeReductionInter, 2.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 200.3s InterpolantComputationTime, 782 NumberOfCodeBlocks, 782 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1290 ConstructedInterpolants, 0 QuantifiedInterpolants, 6712 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1616 ConjunctsInSsa, 161 ConjunctsInUnsatCore, 20 InterpolantComputations, 8 PerfectInterpolantSequences, 3134/3273 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((1 <= B % 4294967296 && 2 == p) && 2 * (B % 4294967296) == d) && q == 0) && r / -4294967296 <= (1 + r * -1) / 4294967296) && 4294967296 * (A / 4294967296) + r == A) && d / 2 <= r) || ((((((B % 4294967296 <= 1 && p == 1) && d == B % 4294967296) && 1 <= B % 4294967296) && q == 0) && r / -4294967296 <= (1 + r * -1) / 4294967296) && 4294967296 * (A / 4294967296) + r == A) RESULT: Ultimate proved your program to be correct! [2021-12-06 23:09:03,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f1f7d42-6b4c-4089-8b5f-05065189f0ba/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE